Patents
Sitemap › H01 - Basic electric elements › H01F - Magnets; Inductances; Transformers; Selection of materials for their magnetic properties › H01F 27 - Details of transformers or inductances, in general
Patents for H01F 27 - Details of transformers or inductances, in general (43,362)
09/1999
09/08/1999EP0940685A2 Shielded and open superconductive magnet
09/08/1999CN2337657Y Protecting cover against fraudulently using electricity for current-conducting rod
09/08/1999CN2337656Y Oval laminated aluminium transformer radiator
09/08/1999CN2337655Y Lightning arrester for television set
09/08/1999CN2337654Y Full-closed hanging transformer
09/08/1999CN2337653Y Full-sealing corrugated oil box transformer
09/08/1999CN2337599Y Low-noise purified electric source
09/08/1999CN1228192A Single coil structure of windings for air-core transformers
09/08/1999CN1227956A Current transformer for gas-insulated switchgear
09/07/1999US5949321 Planar transformer
09/07/1999US5949299 Multilayered balance-to-unbalance signal transformer
09/07/1999US5949191 Heat dissipating transformer in a power supply circuit for a motor vehicle headlight
09/02/1999WO1999044209A1 Multiple parallel conductor for electrical machines and devices
09/02/1999WO1999031946A3 Arrangement for implementing a magnetic circuit on a circuit board
09/02/1999WO1999028934A3 Flux control for high power static electromagnetic devices
09/01/1999EP0939412A2 Coil components and composite coils therefor
09/01/1999CN2336463Y Dynamic focus interference improving structure for transformer
09/01/1999CN2336462Y Rectangular alumina strip iron remover capable of naturally ventilating and cooling
09/01/1999CN1227660A Planar transformer
09/01/1999CN1227328A High voltage transformer of microwave oven having structure for radiating heat
09/01/1999CN1044943C Apparatus for making a transformer core comprising strips of amorphous steel wrapped around the core window
08/1999
08/31/1999US5946171 Method and device for prevention against explosion and fire of electrical transformers
08/31/1999US5945892 LC resonating component and method of making same
08/31/1999US5943744 Multi-functional clip for vertically stacked multi-layer magnetic transformers
08/25/1999EP0938106A1 Coil
08/25/1999EP0937994A2 Open and shielded supercondutive magnet
08/25/1999CN1226994A Method for evaluating deterioration of insulating paper
08/24/1999US5942965 Multilayer substrate
08/24/1999US5942893 Shielded eddy current sensor for enhanced sensitivity
08/19/1999WO1999031682A3 Planar transformer
08/19/1999DE19805914A1 Compact planar transformer for high frequency switched mode power supplies
08/18/1999EP0936637A2 Transformator
08/18/1999EP0936045A1 Molded electromagnetic shielding housings
08/18/1999CN2334088Y Dry transformer
08/18/1999CN2334087Y Primary terminal of high-tension current transformer
08/18/1999CN1226348A Conductor of high-voltage winding and method for manufacturing said conductor
08/18/1999CN1226347A 电磁装置 Electromagnetic devices
08/18/1999CN1226070A Three-balanced-weight three-junction transformer
08/18/1999CN1226069A Transformer
08/17/1999US5939967 Ground plane isolation of planar inductors using a magnetic disk
08/17/1999US5939966 Inductor, transformer, and manufacturing method thereof
08/17/1999US5937893 Shield for pressure relief device
08/12/1999WO1999028931A3 A reactor
08/12/1999WO1999028927A3 A power transformer/reactor
08/12/1999WO1999028926A3 A transformer/reactor and a method for manufacture of a transformer/reactor
08/12/1999WO1999028925A3 Transformer core with cooling flanges
08/12/1999WO1999028922A3 Shell transformer/reactor
08/12/1999WO1999022565A3 Planar magnetic component with transverse winding pattern
08/12/1999DE19804757A1 Method of forming a flat mounting surface on at least one side of electrical component, especially SMD component
08/12/1999DE19804377A1 Connection arrangement for synthetic resin transformer equipped with number of mains terminals
08/12/1999CA2261875A1 Molded electromagnetic shielding housings
08/11/1999EP0935264A1 Current transformer for a gas-insulated switch installation
08/11/1999EP0934594A1 Inductor
08/11/1999CN2333074Y Transformer high-tension coil
08/11/1999CN2333073Y Wiring terminal protective sleeve of power transformer
08/11/1999CN2333072Y Iron core improved structure of annular transformer
08/11/1999CN2333071Y Evaporating cooled transformer
08/11/1999CN1225755A High voltage rotating electric machine having magnetic circuit, and method for mfg. same
08/11/1999CN1225753A Rotating electrical machine plant
08/11/1999CN1225743A 变压器/电抗器 Transformer / reactor
08/11/1999CN1044656C Circuit for applying direct current to winding
08/10/1999US5936504 Chip-type coil device
08/10/1999US5936503 Controllable inductor
08/05/1999WO1999039359A2 Electric ballast
08/05/1999CA2285358A1 Electric ballast
08/04/1999EP0933980A2 Arc limiting device
08/04/1999EP0933975A2 Ignition transformer
08/04/1999EP0933789A2 Planar transformer
08/04/1999EP0933788A1 Multilayer electronic component and manufacturing method thereof
08/04/1999EP0933639A2 Insulating device for rogowski current measuring apparatus
08/04/1999EP0932908A1 Magnetic core structure
08/04/1999CN2332044Y Three-phase symmetric core without air gap
08/04/1999CN2332043Y Support frame of air cooler for transformer
08/03/1999US5933332 Converter transformer
08/03/1999US5931404 Electric coil with a low voltage differential between adjacent windings
08/03/1999CA2071927C Coil assemblies
07/1999
07/28/1999EP0932169A2 Ignition coil for internal combustion engine and method of manufacturing an ignition coil
07/28/1999EP0932168A2 Coaxial transformer
07/28/1999EP0931779A1 Ferrite, and transformer and method for driving it
07/28/1999EP0931323A1 Multiwire parallel conductor for windings of electrical machines and appliances
07/28/1999CN2331065Y Multifunctional ac/dc switchable transformer
07/28/1999CN2331064Y Electrical appliance oil quantity compensator
07/28/1999CN2330805Y Ignition device for multi-cylinder internal combustion engine
07/28/1999CN1224542A High-voltage plants with electric motors
07/28/1999CN1224224A Ferrite, and transformer and method for driving it
07/27/1999US5929736 Engine igniting coil device and method of winding an ignition coil
07/27/1999US5929735 Apparatus for facilitating mounting of an inductor assembly to a printed circuit board
07/27/1999US5929733 Multi-layer printed substrate
07/27/1999US5929722 Low-pass filter laminated with a power detection coil
07/27/1999US5926946 Method for manufacturing reactor
07/22/1999WO1999037008A1 Paired multi-layered dielectric independent passive component architecture resulting in differential and common mode filtering with surge protection in one integrated package
07/22/1999DE19832557A1 Output circuit for pulse inverter driving electric motor
07/22/1999DE19801222A1 Air-cooled dry transformer
07/21/1999EP0930625A1 Method for evaluating deterioration of insulating paper
07/21/1999CN2330050Y Three-phase dry-power transformer with circular section iron core
07/21/1999CN2330049Y Insulation protector for ballast coil
07/21/1999CN2330048Y Once conducting therminal for high-voltage current transformer
07/21/1999CN2330047Y Iron core insulation structure
07/20/1999US5926003 Battery charger
07/20/1999CA2227269A1 Method of decontaminating pcb transformers
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